[ARM] mm: move validation of membanks to one place

The newly introduced sanity_check_meminfo() function should be
used to collect all validation of the meminfo array, which we
have in bootmem_init().  Move it there.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/init.c

@@ -333,14 +333,7 @@ bootmem_init_node(int node, int initrd_node, struct meminfo *mi)
 void __init bootmem_init(struct meminfo *mi)
 {
 	unsigned long memend_pfn = 0;
-	int node, initrd_node, i;
+	int node, initrd_node;
-
-	/*
-	 * Invalidate the node number for empty or invalid memory banks
-	 */
-	for (i = 0; i < mi->nr_banks; i++)
-		if (mi->bank[i].size == 0 || mi->bank[i].node >= MAX_NUMNODES)
-			mi->bank[i].node = -1;
 
 	memcpy(&meminfo, mi, sizeof(meminfo));
 

arch/arm/mm/mmu.c

@@ -569,9 +569,10 @@ void __init iotable_init(struct map_desc *io_desc, int nr)
 static int __init check_membank_valid(struct membank *mb)
 {
 	/*
-	 * Check whether this memory region has non-zero size.
+	 * Check whether this memory region has non-zero size or
+	 * invalid node number.
 	 */
-	if (mb->size == 0)
+	if (mb->size == 0 || mb->node >= MAX_NUMNODES)
 		return 0;
 
 	/*
@@ -605,8 +606,7 @@ static int __init check_membank_valid(struct membank *mb)
 
 static void __init sanity_check_meminfo(struct meminfo *mi)
 {
-	int i;
+	int i, j;
-	int j;
 
 	for (i = 0, j = 0; i < mi->nr_banks; i++) {
 		if (check_membank_valid(&mi->bank[i]))

arch/arm/mm/nommu.c

@@ -41,12 +41,26 @@ void __init reserve_node_zero(pg_data_t *pgdat)
 			BOOTMEM_DEFAULT);
 }
 
+static void __init sanity_check_meminfo(struct meminfo *mi)
+{
+	int i, j;
+
+	for (i = 0, j = 0; i < mi->nr_banks; i++) {
+		struct membank *mb = &mi->bank[i];
+
+		if (mb->size != 0 && mb->node < MAX_NUMNODES)
+			mi->bank[j++] = mi->bank[i];
+	}
+	mi->nr_banks = j;
+}
+
 /*
  * paging_init() sets up the page tables, initialises the zone memory
  * maps, and sets up the zero page, bad page and bad page tables.
  */
 void __init paging_init(struct meminfo *mi, struct machine_desc *mdesc)
 {
+	sanity_check_meminfo(mi);
 	bootmem_init(mi);
 }